First of all: Very nice puzzle! I liked it a lot because it was challenging and fun.
I have two problems with question number tree:
- There are two many possibilities. You could say Mary is the odd one because she is a girl and you could also say John is the odd one cuz he doesn't have an "a" in his name.
- My bigger problem is that it is impossible to solve that question if you don't know Supernatural and you don't want to google the names.
My solution to Q2 A was 0. Looking back your solution makes much more sence but I want to share my logic with you.
That is quite an interesting solution. Maybe I could use that type of logic in a future puzzle.
Yeah, I admit Question 3 was not great from that aspect. I understand what you mean by John but Sam could also be a girl's name. I think in future I will ask for the logic as part of the question so that I can accept more answers.